Friction Stir Welding Method
OwnerKinya Aotainventor
Life of this patent
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Abstract
The present invention provides a friction stir welding method in which a plurality of members are lapped and a welding tool is pressed into one of the members, while being rotated, to cause friction stir to weld the members. A small diameter projected part is disposed at a tip end of a shoulder of the welding tool, and is positioned out of a rotating axis of the welding tool. Especially, the method is suitable for spot welding and removes a surface oxidation film on a lapped welding interface to weld two members.
Claims15
A friction stir welding method comprising:
- lapping a plurality of members to be welded;
- and pressing a welding tool into one of the members, while the welding tool being rotated, to cause friction stir to weld the members,
- wherein the welding tool includes a projected part having a small diameter at a tip end of a shoulder, the projected part being positioned out of a rotating axis of the welding tool.
A friction stir welding tool for welding a plurality of lapped members, the welding tool being pressed into one of the members, while the welding tool being rotated, to cause friction stir to weld the members,
- wherein the welding tool includes a projected part with a small diameter at a tip end of a shoulder, the projected part being positioned out of a rotating axis of the welding tool.
A friction stir welding apparatus for welding a plurality of lapped members, the apparatus comprising a welding tool pressed into one of the members, while the welding tool being rotated, to cause friction stir to weld the members,
- wherein the welding tool includes a projected part having a small diameter at a tip end of a shoulder, the projected part being positioned out of a rotating axis of the welding tool.
Dependencies are inferred from the claim text.